We interpret this pattern as the top of a small plume that probably starts on the upper surface of the slab and reached the bottom of the crust [Dobretsov, 2010]. Similar flows, or hot fingers, were found in the mantle wedge beneath northeastern Japan [e.g., Tamura et al., 2002]. The shapes and periodicity of these hot fingers were
predicted by Dobretsov and Kirdyashkin [1997], based on geodynamical modeling and existing petrological, geochemical and geophysical data.
We interpret this pattern as the top of a small plume that probably starts on the upper surface of the slab and reached the bottom of the crust [Dobretsov, 2010]. Similar flows, or hot fingers, were found in the mantle wedge beneath northeastern Japan [e.g., Tamura et al., 2002]. The shapes and periodicity of these hot fingers werepredicted by Dobretsov and Kirdyashkin [1997], based on geodynamical modeling and existing petrological, geochemical and geophysical data.
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